Method for producing molten pig iron or steel pre-products in a melt-down gasifier

US4588437A · kind A · utility

Assignees

• Korf Engineering GmbH · DE
• Voest-Alpine · AT

Inventors

• Werner Kepplinger · Linz, AT
• Rolf Hauk · Düsseldorf, DE

Key dates

• Filing date: Dec 20, 1983
• Grant date: May 13, 1986
• Expiry date: Dec 20, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/134
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

There is disclosed a method and a melt-down gasifier for producing molten pig iron or steel pre-products and reduction gas. A first fluidized-bed zone is formed by coke particles, with a heavy motion of the particles, above a first blow-in plane by the addition of coal and by blowing in oxygen-containing gas. Iron sponge particles and/or pre-reduced iron ore particles with a substantial portion of particle sizes of more than 3 mm are added to the first fluidized-bed zone from above. A melt-down gasifier for carrying out the method is formed by a refractorily lined vessel having openings for the addition of coal and ferrous material, openings for the emergence of the reduction gases produced, and openings for tapping the metal melt and the slag. Pipes or nozzles enter into the meltdown gasifier above the slag level at at least two different heights.